Following chronic exposure or repeated dosing, THC may increase the risk of onset and relapse of psychosis, while CBD may oppose its harmful effects (Morgan and Curran 2008 Schoeler et al. 2010 Colizzi and Bhattacharyya 2017 Hindocha et al. Human experimental studies have shown that acutely both THC and CBD may have opposing effects on behaviour and cognition (Bhattacharyya et al. The two primary cannabinoids that are most abundant in common cannabis strains are: delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD). Cannabis has over 120 different cannabinoid compounds (specific to cannabis) with over 600 different terpenoids and flavonoids (Ahmed et al. While there are advantages and limitations of using these terms to bridge views of researchers and individuals who use cannabis, this study underscores the importance of formally assessing chemical constituents rather than relying on self-report data and of incorporating cannabis user views on current terms used in research, potentially also incorporating descriptors of preparation and consumption methods.Ĭannabis is one of the most widely cultivated psychoactive drugs consumed by 3.9% of the global population aged 15–64 years old World Drug Report ( 2020). The results suggest a disparity between the common terms used by researchers in academia and those used by cannabis consumers. Regarding problems with specific terms, participants were skeptical about terms such as skunk and super skunk ( n = 78) preferring terms like THC/CBD, indica/sativa, specific marketed strains and references to preparation methods. Other terms used were hybrids ( n = 10), origins of specific strains ( n = 17), edibles ( n = 8), and herbal cannabis ( n = 7). Regarding type of cannabis used, specific strain names ( n = 130), concentrates ( n = 37), indica/sativa ( n = 22) and THC/CBD terms ( n = 22) were mentioned. Data was used from a previous study (Sami et al., Psychol Med 49:103–12, 2019), which recruited a convenience sample of 1231 participants aged 18 years and above who had previously used cannabis. We qualitatively analysed 236 free-text responses from Question 23 of the CEQ survey (using Iterative Categorisation) relating to categorization and consumption methods. These views were extracted from responses of the Cannabis Experiences Questionnaire (CEQ), a widely used instrument in the literature. Focusing on individuals who use cannabis frequently, this study aimed to identify views on current terms used to denote different types of cannabis and to identify terms validated by participants. Recreational cannabis has also been categorised by researchers as ‘skunk’ or ‘hash’. Current categorisation in research focuses on the two main cannabinoids: delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD) and two different species of cannabis: indica and sativa. When preparing your writing sample, be sure to follow program requirements, which may include format, topic, or length.While current cannabis research has advanced our understanding into the effects of its individual components, there is a pressing need to identify simple terminology that is understood in the same way by researchers and users of cannabis. Please visit Degree Programs and navigate to your degree program of interest to determine if a writing sample is required. Your statement should be no longer than 500 words. Please share how your experiences or activities will advance our mission and commitment. We are committed to educating individuals who reflect the growing diversity of perspectives and life experiences represented in society today and who will contribute to our commitment to sustain a welcoming, supportive, and inclusive environment. Personal StatementĪ core part of the Harvard Griffin GSAS mission is to identify and attract the most promising students to form a dynamic and diverse community. Unless otherwise noted, your statement should not exceed 1,000 words. Your degree program of interest may have specific guidance or requirements for the statement of purpose, so be sure to review the degree program page for more information. You should describe your reasons and motivations for pursuing a graduate degree in your chosen degree program, noting the experiences that shaped your research ambitions, indicating briefly your career objectives, and concisely stating your past work in your intended field of study and in related fields. Your statement should be focused, informative, and convey your research interests and qualifications. The statement of purpose is very important to programs when deciding whether to admit a candidate.
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